Had to restore a Revox A700 tape recorder and it needed also upgrade of this board, so I made few more for sale. For EU buyers - price is $90 including shipping if buy directly, for non-EU - better to buy it through eBay because it pays the import taxes and all is much easier - https://www.ebay.com/itm/185563616666 . It have pre-regulator for the opamp and all other is as in the service manual for PCB 1.067.421. Item is located in Sofia, Bulgaria
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